Internal sleeve oil burner



y ,1 R. F. ANDLER 2,206,070

INTERNAL SLEEVE on. BURNER Filed July 15, 193? .2 Sheefls-Sheet 1 FiGLi- IIIIIIIIIIIIIIIIIIIIIII "II.

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IN VENT OR.

MvCk QwA ATTORNEY.

y 2, 1940- R. F. ANDLER 2,206,070-

iNTERNAL- SLEEVE. OIL BURNER Filed July 15, 1957 2 Sheets-Shet 2 ATTORNEY Patented July'2, 1940 Q INTERNAL SLEEVE on. BURNER Robert F. Andler, Rutherford, N. .L, assignor to Electrol Incorporated, Clifton, N. 3., a corporation of Delaware Application. July 15, 1937, Serial No. 153,714

6 Claims.

My invention relates to oil burners for producing the well known ball type of flame.

The principal object of my invention is to improve the construction of the sleeve or air who through which the air is conducted and from with a standard out off valve 8 the construction which it emerges as in a gyrating form to mix on which is too well known to require. descripwith the oil as it is ejected from the nozzle. tion. The outer end of the oil conductor 7 con- ,A further object is to provide a construction stitutes a nozzle 9 which is formed to emit the which will divert a portion of the air, which oil inaspray of substantially conoidal form. The travels in a gyrating annulus around the air plate also supports the electrodes In which are 10 cone, to the interior of said air cone which has properly located to ignite the spr 011 at the anoll tube therein. The oil tube is provided. desired time. Oil is supplied to the cut ofi valve with anozzle which is located adjacent the outlet 8 and in turn to the oil conductor by means of of said inner air tube. The nozzle should be a suitable pump (not shown). The inner cylinformed to emit a substantially conoidal oil spray. drical member or air cone 6 may in some cases The end of the inner tube is contracted to more e pr vid d with an inwardly and u wa y intimately mix the sprayed oil with the whirling flaring conoidalportion ll although this is not air currents, thereby obtaining a much more essential to the operation of the burner, when eficient burner by securing better combustion. it is so supplied I provi e in the ou war ly flaring My means of accomplishing the foregoing ob portion of the air cone a plurality of slots i2 jects maybe more fully comprehended by having which are formed as shown in Fig. 5. When the reference to the accompanying drawings, which outwardlyflaring cone ll is used there should be are hereunto annexed and are a part of this n annular space is between its periph cifi atio in hich: i and the inner edge 15 of the inwardly extending 'Fig. 1 is a side elevation of my improved oil truncated conoidal portion it of the air receiver burner a part of the device being shown in 2- Aplurallty f l s l prefe a y at an an ti with respect both to a plane lying at right angles Fig. 2 is an enlarged detail view showing a and one lying P rallel to the axis of the cylin e fragmentary portion i section; are drilled or formed in the wall of the inner Fig. 3 is an enlarged detail view in section of y dr l m m hr h whi h the ll the outer air tube; enters as indicated by the arrows. Although I Fig. 4 is an enlarged detail view of the inner have Shown the fins 3 and the w dly fl rin air tube; conoidal portion ll, these parts whiledesirable Fig. 5 is an end view of the outlet of the same. n be it d- Th n pa f tu of my Similar reference numerals refer to similar invention s in p ovidi Spaced whirling yparts throughout th nt pecification, rating airstreams to contact the conoidal spray As shown in the drawings: The burner consists f Oil emitted y the nozzle 9; Th p ra ion '1 )f a fan or blower l which has its discharge conburner 15 as follows! The u alve is noted to the air receiver 2 so that the air enters connected to a Source Of Oil (not w w ich said receiver 2 directly on the diameter at right is under p r that th Oil Will be emitted 4 angles. The air receiver 2 is cylindricalin cross f h nozzle 111 n w rd y fl ring conoidal ;ect1on and t discharge end tapers inwardly, spray or mist formed of minute particles of oil. forming an inwardly extending truncated conoi- The electrodes are 'cohhectedlto a Source 12.1 wall I8 through which the air passes to the high tension electric current (not shown) to pro- :ombustion chamber (not shown). This air reduce Spark t The air f m he lower l 1 is formed th an axially extending n enters the air chamber as indicated by the arrows lrical portion 2' in which in mounted an inn r where it forms a gyrating current which enters vubular member 8 which is termed in the trade the fi 3 i an annular form until it ac s h air cone, Thi inn r t b lar b r is the annular space l3 through which it passes to counted in the cylindrical portion 2', of the air the c m usti c ambe An t e port on of so 'eceiver 2. Its outer wall is spaced from the nner wall of the air receiver so as to provide in annular space between the two. Aplurality 1 fins or vanes 3 are mounted in the space heween the air receiver 2 and the inner cylindrical member or air cone 4. A plate 5 is attached in any suitable manner to this inner cylindrical member 6. The plate! 5 has a support 6 at its center for the oil conductor 1 which is provided this air stream expands inwardly through the slots I! of the'conoidal portion ll making contact with the outer portion of the conoidal spray of oil emitted by the nozzle 9. Another portion of the annular gyrating air stream in the space.

' spray between the wall of the air receiver 2 and the wall of cylinder 4 expands inwardly through the holes I! into the annular space between the oil conductor 1 and the cylinder I. 'By slanting the holes I 1 the whirling or rotating movement of theair is not interfered with. -Indeed practice has shown that slanting them will of itself impart a rotating motion to the air currents. I have found that this inner air stream is essential, otherwise the nozzle 8 will become so hot that it will cause the oil to carbonize. Also this air tends to keep the oil spray away from the electrodes and keeps them in a clean condition thereby securing an improved result. An opening 20 which is closed by a shutter 26 held tightly shut by a screw 22'may be provided. Preferably the amout of air is controlled by a shutter at the inlet of the fan i.

Having described my invention, what I regard as new and desire to secure by letters Patent is:

1. In an oil burner, a tube through which air is supplied and having a contracted outlet end, a nozzle for emitting a substantially conical oi oil, said nozzle located in said tube near the outlet end thereof, an inner tubular member surrounding said nozzle in spaced relation, forming with said tube an annular passage through which air flows and from which it is directed .into the sprayed oil in a zone near the nozzle, a plurality of vanes which extend inwardly from the air supply tube, said vanes, adjacent the outlet end of said tube, being radially spaced from said inner tubular member sufiiciently to define a substantially annular space between said tube and said tubular member into which the inner part of the annular air stream may expand and form an inner annular air stream of less velocity than the outer part of the annular air stream.

2. In an oil burner, a tube through which air is supplied and having a contracted outlet-end, a nozzle for emitting a substantially conical spray of oil, said nozzle located in said tube near the outlet end'thereof, an inner tubular member surrounding said nozzle in spaced relation and forming with said tube an annular passage through which air flows and from which it is directed into the sprayed oil in a zone near the nozzle, said tubular member tapering inwardly near said nozzle and then flaring outwardly and having a pinrality of slots in said outwardly flaring portion, a plurality of vanes which extend inwardly from the air supply tube, said vanes, adjacent the outlet end of said tube, being radially spaced from said inner tubular member sufliciently to define a substantially annular space between said tube and said tubular member into which the inner part of the annular air stream may expand and form an inner annular air stream of less velocity than the outer part of the annular air stream.

3. In an oil burner, an air supply tube having a contracted outlet at its forward end, a spray nozzle located in said tube near the outlet end thereof, and an inner tubular member surrounding said nozzle in spaced relation and forming with said air supply tube an annular passage through which air flows and from which it is directed into the sprayed oil in a zone near the nozzle, said tubular member tapering inwardly near said nozzle and then flaring outwardly substantially to the diameter of the contracted outlet end of the air supply tube, and having a plurality of slots in said outwardly flaring portion through which air flows in leaving said annular passage.

4. In an oil burner, an air supply tube having a contracted outlet at its forward end, a spray nozzle located in said tube near the outlet end thereof, an inner cylindrical tubular member,

closed at' its rearward end, surrounding said nozzle in spaced relation and forming with said air supply tube an annular passage through which air flows and from which it is directed into the sprayed oil in a zone near the nozzle, the cylindrical wall of said tubular member being provided, immediately rearwardly of said nozzle, with a plurality of apertures through which jets of air are admitted from said annular passage to the interior space about said nozzle defined by said tubular member and are directed against said nozzle to cool the same, and means positioned in said annular passage adapted to impart a whirling motion to the air stream passing therethrough.

5. In an oil. burner, an air supply tube having a contracted outlet at its forward end, a spray nozzle located in said tube near the outlet end thereof, an inner tubular member, closed at its rearward end, surrounding said nozzle in spaced relation and forming with said air supply tube an annular passage through which air flows and from which it is directed into the sprayed oil in a zone near the nozzle, the'wall of said tubular member being provided, rearwardly of said noz- .zle, with a plurality of apertures, directed at an angle with respect both to a plane lying at right angles and one lying parallel to the axis of said tubular member, for the admission of air from said annular passage to the interior space about said. nozzle defined by said tubular member, and means positioned in said annular passage adapted 'to impart a whirling motion to the air stream passing therethrough.

6. In an oil burner, an air supply tube immediately beyond the forward end of which combustion takes place, said tube having a contracted outlet at its. forward end, a spray nozzle located in said tube near the outlet end thereof, and an inner tubular member surrounding said nozzle in spaced relation and forming with said air supply tube an annular passage through which air flows andfrom which it is directed into the sprayed oil in azone near the nozzle, said tubular member flaring outwardly adjacent said nozzle substantially to the diameter of the contracted outlet end of the air supply tube, and having a plurality of slots in said outwardly flaring portion through which air fiows in leaving said annular passage, whereby the said slots function to give direction to the air for combustion as it leaves the forward end or said tube and enters the zone of combustion.

ROBERT I". ANDLER- 

